Adsorption in non interconnected pores open at one or at both ends: A reconsideration of the origin of the hysteresis phenomenon

Details Adsorption in non interconnected pores open at one or at both ends: A reconsideration of the origin of the hysteresis phenomenon Adsorption in non interconnected pores open at one or at both ends: A reconsideration of the origin of the hysteresis phenomenon

2001-12-21

arxiv.org/abs/cond-mat/0112416v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 EPS figures

Scientific paper

10.1103/PhysRevLett.88.256102

We report on an experimental study of adsorption isotherme of nitrogen onto porous silicon with non interconnected pores open at one or at both ends in order to check for the first time the old (1938) but always current idea based on Cohan's description which suggests that the adsorption of gaz should occur reversibly in the first case and irreversibly in the second one. Hysteresis loops, the shape of which is usually associated to interconnections in porous media, are observed whether the pores are open at one or at both ends in contradiction with Cohan's model.

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